Paper-folding machine.



No. 728,733. PATENTBD MAY 19, 1903; w. r. LIDDLE. PAPER FOLDING MACHINE.

APPLICATION runny. 24. 1903. v 110 MODEL. a sums-51mm 1 No. 728,733. PATENTED MAY 19', 1903. w. r. LIDDLE. v PAPER FOLDING. MACHINE.

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gglll j UNITED STATES Patented-May 19, 1903.

WILLIAM FREDERICK LIDDLE, OF LONDON, ENGLAND.

PAPER-FOLDING MACHINE.

SPECIFICATION forming part Of Letters Patent No. 728,733, dated May 19, 1903.

Application filed February 24,1903. Serial No. 144,875. (No model.)

To aZZ whom it may concern:

Be it known that I, WILLIAM FREDERIO LIDDLE, engineer, a subject of the King of Great Britain, residing at 26 Manaton road, Albert road, Peckham, London, S. E., in the county of Surrey, England,have-invented new and useful Improvements in Paper-Folding Machines, of which the following is a specification.

Myinvention consists in a machine for folding paper, and relates more particularly to the folding of grease-proof and like papers employed for lining the interior of tins, jars, dishes, and similar vessels of circular or other shape, and I will now proceed to describe my improvements, reference being made to the accompanying drawings, in which Figure 1 is an elevation of my invention, the plunger being in the upper position. Fig. 2 shows detail of .hinged leaves. Fig. 3 is a part-sectional elevation showing disposition of hinged leaves. Fig. 4 is an enlarged part view of Fig. 1, the plunger being down. Fig. 5 shows the paper shape produced by means of the apparatus shown. Fig. 6 is a part plan of Fig. 3.

In the drawings, 1 is the frame, formed of cast-iron, wood, or other suitable material, having feet 1 and tie-bars 1*, attached to or formed with the standards 11 The standard 1 terminates in a forked extremity l in which is pivoted on a pin 2 a lever 3. The standard 1 is formed with a slotted extension 1, which serves as a guide for the lever 3. A counterbalance 4 is adj ustably secured, as at at, to one end of lever 3, as shown, its other end being fitted with a drop-handle 5. Short links 6 are pivoted, as at 6, to the lever 3, their other ends being pivoted on a pin 7 to the eye of plunger-rod 8. This rod is preferably of diamond section, as at a, and takes a bearing through the tie-bars l The plunger 9 is attached to its extremity by screwing, or it may be formed in one piece with it. The rod and plunger are centrally disposed, and when depressed the end of the plunger passes through a circular hole 10, formed in the top of the table, bench, or like supporting-stand 11 of the machine. Tangentially disposed, as shown, Fig. 6, around this circular hole are a plurality of tilting bars 12, each pivoted at 13 to a separate segmental block 14:,said block'being screwed to a lower segmental portion 14., secured to or formed with the base-plate15. The inner ends of tilting bars 12 project over said hole and are struck by the plunger in descent. The bars 12 (see Figs. 2 and 3) have each-hinged to theirupper corner segmental leaves 16, formed of brass or other suitable metal. A gap is left in the hinge-fold, and an expansion-spring 17 is coiled around the hinge-pin 18, as shown. .A C-spring 20 is riveted or secured to the outer extremity of each tilting bar 12, its other end pressing the hinged leaf 16 against the back-stop 21, thereby keeping same erect.

Beneath the lower tie-bar 1 is a moving frame 24, fitted with slippers 25, moving in guides 26, fitted to side standards. The plunger-rod 8 passes through the top member 24 of said frame,-the plunger 9 passing through the lower 24. (See Fig. 4:.) This lower member or plate has radially disposed a plurality of depending springs 27, which correspond to the number of tilting bars and leaves, the number of these depending, of course, upon the size and number of folds in the paper shape. A saddle-spring 28 presses upon the top of this frame 24 and tends to keep same agai ust the stops 29, secured to the side standard -1 1, as shown in Fig. 4..

The operation of my invention is as follows: A sheet of paper or the like is placed centrally over the top of the hinged leaves, and upon depressing Lheplunger by pulling the handle 5 the plunger descends, striking the inner ends of the tilting bars 12, causing them to rise and assume the position shown in Fig. 4. The moving spring-frame also descends with the plunger and takes up its position upon the stops 29. The passage of the plunger through the hole causes the hinged leaves to fold the paper with a radial crease by pressing same behind the depending springs 27 against the plunger 9. The further passage of the plunger will push the folded paper shape clear through the forming apparatus, the return stroke causing it to drop into a shape-chute or be otherwise delivered to the packer. The counterbalance 4. lifts the plunger and raises at the same time the depending spring-frame 24. Should there be any obstacle preventing the paper folding behind the depending springs, the hingedleaves slightly lift, allowing the obstacle to pass.

It will be understood that while I have described a form of my invention suitable for making the shape shown in Fig. 5 I may vary the size, number, and shape of the forming parts according to the work required.

1. The combination in paper-folding machines for the purpose herein described of a plunger raised and depressed by a counterbalanced lever; a movable frame carrying depending springs which surround said plunger, a plurality of tangentially-arranged tilting bars carrying hinged leaves, the ends of said bars being so mounted as to engage with said plunger, on its descent, thereby causing them to cooperate with the depending springs and fold the paper in the manner set forth.

2. The combination in a machine for folding paper or the like of a plurality of tangent-iallydisposed tilting bars adapted to be raised by a plunger on depression, leaves hinged to said bars and capable of lateral movement against the compression of aspring substantially as described.

-3. In a machine for folding paper or the like the combination with the tilting bars adapted to be raised on depression of a plunger as described of the expansion-spring surrounding the pin and the C-spring for keeping each leaf in a flexibly erect position substantially as described. 

